Mosseau
Location
Eeyou Istchee – Baie James (Lebel-sur-Quévillon)
Area
8,484 ha
Commodities
Au (orogenic)
Status
100% Vior Gold Corporation
Option Harvest Gold (100% – ongoing)
The Mosseau Project, located approximately 22 km east of the town of Lebel‑sur‑Quévillon, lies near the eastern boundary of the Abitibi Subprovince greenstone belt. It comprises a volcano‑sedimentary package and the western extremity of a plutonic body that host numerous gold and copper mineralized showings, including the Morono M deposit, which hosts estimated resources of 317,000 tonnes grading 3.4 g/t Au (non‑NI 43‑101 compliant).On December 18, 2023, Vior Gold Corporation entered into an agreement with Harvest Gold under which Harvest has the option to acquire a 100% undivided interest in the Mosseau Project over a period of four and a half years by meeting certain conditions. To date, Harvest has fulfilled its obligations under the agreement and has until June 30, 2028 to complete the option.
Geology and Mineralization
Aphyric and glomeroporphyritic basalts of the Quévillon Group surround the west‑closing Wilson Pluton. Thin flows of intermediate volcanic rocks and a small sedimentary basin are interstratified with the basalts. The Wilson Pluton is granodioritic in composition and is bordered by a dioritic fringe. The regionally extensive Kiask River Deformation Zone crosses the project from northwest to southeast. A series of parallel and cross‑cutting shear zones has also developed, several of which host disseminated gold‑bearing pyrite, including the Morono M deposit. In addition, a network of quartz veins injected into the western tip of the pluton is also gold‑mineralized.
Exploration History
The area has been actively explored since the late 1940s, with exploration efforts primarily focused on the northwestern part of the property, where most of the gold showings are located, including the Morono M deposit, which was systematically drilled to a vertical depth of approximately 250 m. In recent years, exploration efforts have also expanded to areas along the Kiask River Deformation Zone, where strongly gold‑anomalous envelopes are being progressively delineated both at surface through prospecting and stripping, and at depth through drilling.
In 2025, Harvest completed a total of 4,692 metres of drilling in 21 drill holes. On February 11, 2026, Harvest announced a grade of 105 g/t Au over 1.15 metres in drill hole MO‑25‑25. Other anomalous intervals from the 2025 drilling program include 0.50 g/t Au over 16.35 metres, including 1.85 g/t Au over 1.50 metres in drill hole MO‑25‑26, and 0.22 g/t Au over 16.0 metres in drill hole MO‑25‑28 (see press releases dated January 8, 2026 and January 29, 2026, available on the Harvest Gold website).
